Pith Number

pith:CCN3ZLFU

pith:2016:CCN3ZLFUMNNJ2IRRJJ4SPNUIF5

not attested not anchored not stored refs pending

Inverse obstacle scattering with non-over-determined data

A.G. Ramm

arxiv:1611.09952 v2 · 2016-11-30 · math.NA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CCN3ZLFUMNNJ2IRRJJ4SPNUIF5}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:42:23.697670Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

109bbcacb4635a9d22314a7927b6882f538d40ad65762f2d0a4c80fb8cf7a71f

Aliases

arxiv: 1611.09952 · arxiv_version: 1611.09952v2 · doi: 10.48550/arxiv.1611.09952 · pith_short_12: CCN3ZLFUMNNJ · pith_short_16: CCN3ZLFUMNNJ2IRR · pith_short_8: CCN3ZLFU

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/CCN3ZLFUMNNJ2IRRJJ4SPNUIF5 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 109bbcacb4635a9d22314a7927b6882f538d40ad65762f2d0a4c80fb8cf7a71f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1912f460deb43bd2647ffa1ddc6cbf9d8697d39a927ff446ce5331d7ffdf9ae4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2016-11-30T00:27:28Z",
    "title_canon_sha256": "700807e7753dd67b94ac8b2ea113b308c558d701b0603b2b71fd57e04485da64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.09952",
    "kind": "arxiv",
    "version": 2
  }
}